I have a non turbo 89 RX-7 13b. I was told that the spark plugs are supose to look diffrenet, or have some sort of differnt collering on them. Mine are all the same is that bad or what? I also orderd some plug wires for the car and they where cheap like under 20 US $ is that bad too?

the plugs look different than "normal" piston engine plugs. $20 for a wire set is a good deal



mike

no u just have 4 plugs, leading and trailing. dont get those confused when putting em in.

i run all 9s on my turbo....but for your NA i would run 7s and 9s

what doe that mean

it is the heat range of the plug. The higher the number, the "colder" the plug is. This allows it to run in hot engines without melting.

http://www.ngksparkplugs.com/techinfo/spar...gs/techtips.asp



good spark plug tech page

so in a stock T2 what should i run

i dont know t2's but i would run either 9's trailing, 7's leading, or 9's all around.

well how would each setup differ from the other